Abstract: A rotogravure printing unit includes a forme cylinder and an inker unit. The inker unit includes a trough which holds liquid or pasty ink. A first inking roller, which can rotate inside the trough, extends over a first width section of the trough and the forme cylinder. A second inking roller, which can also rotate inside the trough, extends over a second width section of the forme cylinder or the trough.

Abstract: A “spider” device for collecting and conveying signatures produced on rotary print machines. The inventive device is adapted to be moved outside the production line without stopping operation of the production line. The device is equipped with a hinging mechanism adapted to connect it to a vertical riser of the production line for rotating it around at least one vertical axis with respect to the ground. The inventive device is further equipped with a hooking/unhooking mechanism used to allow repositioning the device in the same operating position in the production line.

Abstract: A printing device (1) is disclosed for rotogravure printing machines comprising: a printing cylinder (3) with notches (50) for printing liquid, a rubber roller (4) for pushing paper web supports (2) against the cylinder (3) in order to print, and a scraper member (7) for cleaning the surface of the printing cylinder (3) of printing liquid not contained in notches (5); the scraper member (7) is equipped with thrusting members (9, 10) central therewith that thrust a central portion of the scraper member (7) towards the cylinder (3) in order to bend the scraper member (7) such that the bend in the scraper member (7) follows a bending to which the cylinder (3) is subjected upon the rubber roller (4) being pushed against the cylinder (3).

Abstract: A printing device (1) is disclosed for rotogravure printing machines comprising: one printing cylinder (3) with notches (5) for the printing liquid, one rubber roller (4) for pushing printing supports (2) against the cylinder (3) in order to print and one scraper member (7) for cleaning the surface of the printing cylinder (3) from the printing liquid not contained in the notches (5); the scraper member (7) is equipped with thrusting members (9, 10) central therewith that thrust the scraper member (7) towards the cylinder (3) in a central position in order to bend the scraper member (7) next to a bending to which the cylinder (3) is subjected upon thrusting the rubber roller (4) against the cylinder (3).

Abstract: A “spider” device (1) is disclosed for collecting and conveying signatures produced on rotary printing machines; such device (1) is movable, namely it is adapted to be moved outside the production line (5) without stopping it; for such purpose, the device is equipped with hinging means (6′, 6″) that connect it to a vertical riser (9) of the line (5) for rotating it around at least one vertical axis with respect to the ground, and it is further equipped with hooking/unhooking means (14) to the production line (5).

Abstract: A roller for a rotary printing press drying assembly, comprising, near each printing unit, a drying assembly including a plurality of parallel rollers, each roller being circumferentially provided with a plurality of equispaced slots which are arranged parallel to the longitudinal axis of the cylinder.

Abstract: In a rotary printing machine, a pressure roller is mounted on a slide that is reciprocally and linearly moved along two mutually orthogonal directions in order to change impression cylinders.

Abstract: A method of driving the impression cylinder receiving carriages into the printing elements of a rotary printing machine whilst executing a simultaneous displacement of all the impression cylinder receiving carriages provided in the printing elements and of all the impression cylinder receiving carriages arranged in a waiting position in front of the printing elements, the displacement movement taking place in a first direction of advance and, for the subsequent driving-in of the impression cylinder receiving carriages, the latter being displaced simultaneously and together with the carriages located in the printing elements in the opposite direction.

Abstract: In a printing machine, an arrangement for adjusting web register includes a frame detachably mounted on the machine, and a pair of guide rollers over which a web is guided. A downstream roller is raised and lowered, and both rollers, as well as a pair of frame members, are turned as a unitary assembly relative to the machine.

Abstract: Arrangement for automatically introducing paper ribbons into a plurality of angle-bars of a printing press, comprising a plurality of endless chains, one for each angle-bar, for conveying a respective ribbon to a folder-stitcher unit. Each chain has a gripper for grasping a leading end of the respective ribbon. Each chain is independently driven by a motor drive.

Abstract: Device for the automatic clamping of a spool of material in web form, especially for a spool-receiving device of a rotary printing machine, each mounting for receiving the projecting hub of the spool having a shell-shaped lower receptacle for supporting the lower hub part, there being additionally an upper shell-shaped constructional part which is arranged displaceably in the axial direction and which, in the front end position, surrounds the upper hub part and, in the retracted position, releases the upper circumferential part of the hub.

Abstract: An instantaneous adjustment device for a doctoring blade assembly operatively linked to a cylinder in a printing press is provided which includes, interposed to the piston rod of a cylinder-piston unit actuated by compressed air and the oscillating holder assembly accommodating the doctoring blade, a mechanical means, such as a spring for storing up a force, and/or a means effective to periodically transfer an impact force to the doctoring blade oscillating holder.

Abstract: A device for shifting a compensator roller in a printing press, comprising an actuator assembly which may be controlled for either high speed or low speed movement of the compensator roller.